An underwater disassembly and assembly module for mooring accessories

Abstract

The present invention discloses an underwater disassembly and assembly module for a mooring attachment, which comprises a shackle body. On one side of the lower end of the shackle body, there is an ROV cross pin sleeve, and on the other side, there is an ROV nut sleeve. An ROV cross pin driving assembly is arranged inside the ROV cross pin sleeve, and an ROV cross pin is connected to the ROV cross pin driving assembly. The ROV cross pin passes through the shackle body, and an ROV nut assembly is arranged at the other end. A first guiding base is arranged at the bottom of the ROV cross pin sleeve, and a second guiding base is arranged at the bottom of the ROV nut sleeve. The first guiding base and the second guiding base are respectively arranged on an underwater guiding installation platform. The structure of the present invention is simple and reasonably designed, effectively solving the problems of large pushing resistance of the cross pin and difficult positioning, while ensuring the positioning of the cross pin and the nut during the underwater operation. The connection stability of the ROV module is ensured by multiple groups of guiding inclined surfaces, making the operation of the underwater robot more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of mooring chain accessories for mooring chain connections of offshore oil platforms and wind power platforms, and particularly relates to a novel ROV module for mooring accessories. Background Art

[0002] In the mooring devices of offshore oil platforms and wind power platforms, due to the relatively large water depth of the sea, it is no longer practical to install the connecting parts of the chain links manually by diving. At this time, an underwater robot ROV is required to install such chain link parts. Therefore, it is necessary to simplify the installation method of the connecting accessories. Due to the limitation of the flexibility of the manipulator of the underwater robot, its ability for complex motion operations is poor. Therefore, a design is needed that can not only ensure the stability of the mooring chain connection but also take into account the operational convenience of the underwater robot. In previous designs, the installation of the shackle cross pin often adopts a pushing method, which has a large frictional resistance, and at the same time has high requirements for the machining accuracy of the guide rail and the cross pin surface, as well as high requirements for the thrust and control of the ROV robot, making the installation difficult. Therefore, a novel ROV module for mooring accessories is needed, which can meet the requirements of connection performance and service performance while making the operation more convenient. Summary of the Invention

[0003] The object of the present invention is to solve the above technical problems and provide an ROV module for mooring accessories.

[0004] To achieve the above technical objectives and meet the above technical requirements, the technical solution adopted by the present invention is as follows: An underwater disassembly and assembly module for mooring accessories, including a shackle body, a conventional end cross pin passes through the upper end of the shackle body and is connected to a conventional end nut. One end of the conventional end cross pin is provided with a conventional end safety pin. It is characterized in that: on one side of the lower end of the shackle body, there is an ROV cross pin sleeve, and on the other side, there is an ROV nut sleeve. The outer end of the ROV cross pin sleeve is provided with a rotary drive handle. An ROV cross pin drive assembly is arranged inside the ROV cross pin sleeve. An ROV cross pin is connected to the ROV cross pin drive assembly. The ROV cross pin passes through the shackle body, and the other end is provided with an ROV nut assembly. The bottom of the ROV cross pin sleeve is provided with a first guiding base, and the bottom of the ROV nut sleeve is provided with a second guiding base. The first guiding base and the second guiding base are respectively arranged on an underwater guiding installation platform; on the first guiding base, there are symmetrically arranged supports in the front and back. On both ends of the first guiding base, there are symmetrically arranged a first guiding inclined surface and a second guiding inclined surface. Inside the first guiding base, there are a third guiding inclined surface and a fourth guiding inclined surface; at the four corners of the underwater guiding installation platform, there are oppositely arranged guiding inclined surfaces A, B, C, and D. In the middle of the underwater guiding installation platform, there is a hollow groove. On both sides of the hollow groove, there are symmetrically arranged guiding blocks A and B. On the left and right sides of the guiding block A, there are symmetrically arranged a guiding inclined surface E and a guiding inclined surface F. On the left and right sides of the guiding block B, there are symmetrically arranged a guiding inclined surface G and a guiding inclined surface H.

[0005] Preferably: on the bottom plate of the ROV nut sleeve, there is an ROV safety pin slide rail, and an ROV safety pin assembly is arranged on the ROV safety pin slide rail. On one side of the ROV safety pin slide rail, there is an ROV safety pin locking ring pin.

[0006] Preferably: a maintenance manual control cover is arranged at the rear side of the ROV cross pin sleeve.

[0007] Preferably: a sacrificial anode is arranged on one side of the middle of the shackle body.

[0008] Preferably: the first guiding inclined surface corresponds to the guiding inclined surface A, the second guiding inclined surface corresponds to the guiding inclined surface B, the third guiding inclined surface corresponds to the guiding inclined surface F, and the fourth guiding inclined surface corresponds to the guiding inclined surface H.

[0009] Preferably: the second guiding base has the same structure as the first guiding base and is arranged oppositely.

[0010] Preferably: chain grooves for conveniently placing chains are arranged in the middle of the guiding blocks A and B.

[0011] Preferably: the shackle body is set as an H-type shackle or a D-type shackle or a bow-type shackle.

[0012] Advantages of the present invention compared with the traditional structure:

[0013] 1. The structure of the present invention is simple and reasonably designed. Through the ROV cross pin drive assembly, the problems of large pushing resistance and difficult positioning of the cross pin are effectively solved. At the same time, the positioning of the cross pin and nut during underwater operation is ensured, so as to reduce the difficulty of underwater robot operation, meet the requirements of connection performance and service performance, and can be mass-produced.

[0014] 2. The present invention has strong stability. Through the positioning of 8 groups of guiding inclined surfaces, the connection stability of the ROV module is ensured. Through the supporting effects of the guiding base and the underwater installation platform with a guide, the operation of the underwater robot is more convenient, and it has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural view of the present invention;

[0016] Figure 2 is the front view of the present invention;

[0017] Figure 3 is the left view of the present invention;

[0018] Figure 4 is the right view of the present invention;

[0019] In the figure: 1. Shackle body, 2. Conventional end cross pin, 3. Conventional end nut, 4. ROV nut sleeve, 5. Second guiding base, 6. Underwater installation platform with a guide, 61. Guiding inclined surface A, 62. Guiding inclined surface B, 63. Guiding inclined surface C, 64. Guiding inclined surface D, 65. Guiding inclined surface E, 66. Guide block A, 661. Chain groove, 67. Guiding inclined surface F, 7. First guiding base, 71. First guiding inclined surface, 72. Support, 73. Second guiding inclined surface, 74. Third guiding inclined surface, 8. Rotary drive handle, 9. ROV cross pin sleeve, 10. ROV cross pin, 11. Sacrificial anode, 12. ROV nut assembly, 13. ROV safety pin slide rail, 14. ROV safety pin assembly, 15. ROV safety pin locking ring pin, 16. Conventional end safety pin, 17. Maintenance hand control cover. DETAILED DESCRIPTION OF THE INVENTION

[0020] The present invention will be further described below.

[0021] Referring to the attached drawings, an underwater disassembly and assembly module for a mooring accessory includes a shackle body 1. A conventional end cross pin 2 passes through the upper end of the shackle body 1 and is connected to a conventional end nut 3. One end of the conventional end cross pin 2 is provided with a conventional end safety pin 16. It is characterized in that: on one side of the lower end of the shackle body 1, there is an ROV cross pin sleeve 9, and on the other side, there is an ROV nut sleeve 4. The outer end of the ROV cross pin sleeve 9 is provided with a rotary drive handle 8. An ROV cross pin drive assembly is arranged inside the ROV cross pin sleeve 9. An ROV cross pin 10 is connected to the ROV cross pin drive assembly. The ROV cross pin 10 passes through the shackle body 1, and the other end is provided with an ROV nut assembly 12. The bottom of the ROV cross pin sleeve 9 is provided with a first guiding base 7, and the bottom of the ROV nut sleeve 4 is provided with a second guiding base 5. The first guiding base 7 and the second guiding base 5 are respectively arranged on an underwater guiding installation platform 6; on the first guiding base 7, there are symmetrically arranged supports 72 front and back. At both ends of the first guiding base 7, there are symmetrically arranged a first guiding inclined surface 71 and a second guiding inclined surface 73. Inside the first guiding base 7, there are arranged a third guiding inclined surface 74 and a fourth guiding inclined surface; at the four corners of the underwater guiding installation platform 6, there are oppositely arranged guiding inclined surfaces A61, B62, C63, and D64. In the middle of the underwater guiding installation platform 6, there is a hollowed-out groove. On both sides of the hollowed-out groove, there are symmetrically arranged guiding blocks A66 and B. On the left and right sides of the guiding block A66, there are symmetrically arranged guiding inclined surfaces E65 and F67. On the left and right sides of the guiding block B, there are symmetrically arranged guiding inclined surfaces G and H.

[0022] In this preferred embodiment, on the bottom plate of the ROV nut sleeve 4, there is an ROV safety pin slide rail 13. An ROV safety pin assembly 14 is arranged on the ROV safety pin slide rail 13. On one side of the ROV safety pin slide rail 13, there is an ROV safety pin locking ring pin 15.

[0023] In this preferred embodiment, a maintenance manual control cover 17 is arranged at the rear side of the ROV cross pin sleeve 9.

[0024] In this preferred embodiment, a sacrificial anode 11 is arranged on one side of the middle of the shackle body 1.

[0025] In this preferred embodiment, the first guiding inclined surface 71 corresponds to the guiding inclined surface A61, the second guiding inclined surface 73 corresponds to the guiding inclined surface B62, the third guiding inclined surface 74 corresponds to the guiding inclined surface F67, and the fourth guiding inclined surface corresponds to the guiding inclined surface H.

[0026] In this preferred embodiment, the second guiding base 5 has the same structure as the first guiding base 7 and is oppositely arranged.

[0027] In this preferred embodiment, chain grooves 661 for facilitating the fixing of the chain are provided in the middle of the guide block A66 and the guide block B.

[0028] In this preferred embodiment, the underwater disassembly and assembly module can be used not only for the disassembly and assembly of the cross pin of the H shackle, but also for the disassembly and assembly of the D-type shackle or the bow shackle.

[0029] When specifically implemented, the installation method of the present invention is as follows:

[0030] 1) Weld the underwater guide installation platform 6 to the top of the underwater anchor at the operation dock, place the bottom chain head ring on the underwater guide installation platform 6 for fixing, and install it on the seabed together with the underwater anchor.

[0031] 2) Connect the ROV shackle and the upper link through a connecting shackle on the offshore oil platform, the wind power platform or the auxiliary installation ship. Place the ROV cross pin 10 in the open state by rotating the rotary drive handle 8, and then hoist the installed shackle chain group into the sea water by the crane of the installation ship. Guide the ROV shackle to the vicinity of the underwater bottom link through the underwater robot.

[0032] 3) Guide the ROV shackle to the underwater guide installation platform 6 through the underwater robot, position it through the guiding inclined surfaces of the first guiding base 7 and the second guiding base 5, and stably seat the ROV shackle on the underwater guide installation platform 6.

[0033] 4) Operate the underwater robot to swim to the side of the ROV cross pin sleeve 9 and rotate the rotary drive handle 8 to close the ROV cross pin 10. Then operate the underwater robot to swim to the side of the ROV nut sleeve 4, grab the ROV nut handle and rotate it to fasten it to the ROV cross pin 10.

[0034] 5) Operate the underwater robot to operate the ROV safety pin locking ring pin 15 to the open state, release the ROV safety pin, and then operate the underwater robot to grab the ROV safety pin handle and insert it into the hole preset at the end of the ROV cross pin 10.

[0035] 6) Use the crane to lift the connected and installed link and the ROV shackle away from the underwater installation platform, and finally complete the installation operation.

[0036] The above embodiments of the present invention are only examples clearly illustrating the present invention, but do not limit the protection scope of the present invention. All equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention shall be defined by each claim.

Claims

1. An underwater disassembly and assembly module for a mooring attachment, comprising a shackle body (1). A conventional end cross pin (2) passes through the upper end of the shackle body (1) and is connected to a conventional end nut (3). One end of the conventional end cross pin (2) is provided with a conventional end safety pin (16). Characterized in that: On one side of the lower end of the shackle body (1), there is an ROV cross pin sleeve (9), and on the other side, there is an ROV nut sleeve (4). The outer end of the ROV cross pin sleeve (9) is provided with a rotary drive handle (8). An ROV cross pin drive assembly is arranged inside the ROV cross pin sleeve (9). An ROV cross pin (10) is connected to the ROV cross pin drive assembly. The ROV cross pin (10) passes through the shackle body (1), and the other end is provided with an ROV nut assembly (12). The bottom of the ROV cross pin sleeve (9) is provided with a first guiding base (7), and the bottom of the ROV nut sleeve (4) is provided with a second guiding base (5). The first guiding base (7) and the second guiding base (5) are respectively arranged on an underwater guiding installation platform (6). On the bottom plate of the ROV nut sleeve (4), there is an ROV safety pin slide rail (13). An ROV safety pin assembly (14) is arranged on the ROV safety pin slide rail (13). One side of the ROV safety pin slide rail (13) is provided with an ROV safety pin locking ring pin (15). On the first guiding base (7), supports (72) are symmetrically arranged front and back. At both ends of the first guiding base (7), a first guiding inclined surface (71), a second guiding inclined surface (73) are symmetrically arranged. Inside the first guiding base (7), a third guiding inclined surface (74), a fourth guiding inclined surface are arranged. At the four corners of the underwater guiding installation platform (6), guiding inclined surfaces A (61), B (62), C (63), D (64) are oppositely arranged. In the middle of the underwater guiding installation platform (6), there is a hollow groove. On both sides of the hollow groove, guiding blocks A (66), B are symmetrically arranged. On the left and right sides of the guiding block A (66), guiding inclined surfaces E (65), F (67) are symmetrically arranged. On the left and right sides of the guiding block B, guiding inclined surfaces G, H are symmetrically arranged. The first guiding inclined surface (71) corresponds to the guiding inclined surface A (61), the second guiding inclined surface (73) corresponds to the guiding inclined surface B (62), the third guiding inclined surface (74) corresponds to the guiding inclined surface F (67), and the fourth guiding inclined surface corresponds to the guiding inclined surface H.

2. An underwater disassembly and assembly module for a mooring attachment according to claim 1, Characterized in that: A maintenance manual control cover (17) is arranged at the rear side of the ROV cross pin sleeve (9).

3. An underwater disassembly and assembly module for a mooring attachment according to claim 1, Characterized in that: A sacrificial anode (11) is arranged on one side of the middle of the shackle body (1).

4. An underwater disassembly and assembly module for a mooring attachment according to claim 1, Characterized in that: The second guiding base (5) has the same structure as the first guiding base (7) and is arranged oppositely.

5. An underwater disassembly and assembly module for a mooring attachment according to claim 1, characterized in that: a chain groove (661) for facilitating the placement of a chain is provided in the middle of the guide block A (66) and the guide block B.

6. An underwater disassembly and assembly module for a mooring attachment according to claim 1, characterized in that: the shackle body (1) is provided as an H-shaped shackle or a D-shaped shackle or an arch-shaped shackle.

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